feat(auth): add authentication routes and user token handling

- Implemented user authentication routes in `auth.ts` for fetching current user info and admin verification.
- Added caching mechanism for user tokens to improve performance.
- Created middleware for admin authentication.

feat(opencode): create OpenCode client route

- Added `opencode-cnb` route for creating OpenCode clients with session management.
- Integrated OpenCode SDK for client operations and session handling.

refactor(client): encapsulate OpenCode client creation

- Created a utility function `getClient` in `client.ts` to initialize OpenCode clients.

test(opencode): add tests for OpenCode routes

- Implemented test cases for OpenCode routes in `list.ts` to validate functionality.
- Created common utilities for testing in `common.ts`.

package.json

@@ -62,7 +62,7 @@
   },
   "devDependencies": {
     "@kevisual/api": "^0.0.64",
-    "@kevisual/cnb": "^0.0.42",
+    "@kevisual/cnb": "^0.0.43",
     "@kevisual/dts": "^0.0.4",
     "@kevisual/load": "^0.0.6",
     "@kevisual/logger": "^0.0.4",
@@ -71,7 +71,7 @@
     "@types/crypto-js": "^4.2.2",
     "@types/jsonwebtoken": "^9.0.10",
     "@types/micromatch": "^4.0.10",
-    "@types/node": "^25.4.0",
+    "@types/node": "^25.5.0",
     "@types/semver": "^7.7.1",
     "chalk": "^5.6.2",
     "commander": "^14.0.3",